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35eb484f8c
libvirt/tests/virfirewalltest.c
Laine Stump 35eb484f8c tests: remove firewalld backend tests from virfirewalltest.c 
When libvirt added support for firewalld, all iptables/ebtables rules
were added via the firewalld "passthrough" API when firewalld was
enabled (the "firewalld backend"), or run directly by libvirt when
firewalld was disabled (the so-called "direct
backend"). virfirewalltest.c dutifully ran each test twice, once with
the each backend enabled.

But commit b19863640d changed the code to *always* directly run
iptables/ebtables commands, and never use the firewalld passthrough
API, effectively making the direct and firewalld backends identical,
except that when libvirt receives notice that firewalld has restarted
or reloaded its rules, the firewalld backend sends an extra "iptables
-V" command via firewalld's passthrough API (and waits for a response)
prior to running all the rest of the iptables commands directly; this
assures that a newly-restarted firewalld has finished its work on the
filter tables before libvirt starts messing with it. (Because this
code is only executed in response to an event from dbus, it isn't
tested in the unit tests).

In spite of this, we still go through all the virfirewall tests twice
though - once for the direct backend, and once for the firewalld
backend, even though these take the same codepath.

In commit b19863640d I had left this double-testing in thinking that
someday we might go back to actually doing something useful with the
firewalld backend in the course of adding support for native nftables,
but I've now realized that for the case of nftables we will be *even
more* divorced from firewalld, so there is really no point in keeping
this code around any longer. (It's likely/probable that the tests will
be done twice again in the future, but it will be enough different
that it is better to remove this code and re-implement from scratch
when adding the nftables backend, rather than trying to directly
modify the existing code and end up with something even more
confusing).

This patch eliminates all the test duplication in virfirewalltest.c,
including mocking dbus, which is unnecessary since none of the tests
use dbus (for now we ensure that by explicitly setting the virfirewall
backend to DIRECT before any of the tests have run. Eventually the
concept of a "firewalld backend" will disappear completely, but that's
for another patch.)

Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-12-13 13:37:31 -05:00

849 lines
27 KiB
C
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/*
* Copyright (C) 2013-2014 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include "testutils.h"
#if defined(__linux__)
# include <gio/gio.h>
# include "virbuffer.h"
# define LIBVIRT_VIRCOMMANDPRIV_H_ALLOW
# include "vircommandpriv.h"
# define LIBVIRT_VIRFIREWALLPRIV_H_ALLOW
# include "virfirewallpriv.h"
# define LIBVIRT_VIRFIREWALLDPRIV_H_ALLOW
# include "virfirewalldpriv.h"
# include "virmock.h"
# define VIR_FROM_THIS VIR_FROM_FIREWALL
# define TEST_FILTER_TABLE_LIST \
"Chain INPUT (policy ACCEPT)\n" \
"target prot opt source destination\n" \
"\n" \
"Chain FORWARD (policy ACCEPT)\n" \
"target prot opt source destination\n" \
"\n" \
"Chain OUTPUT (policy ACCEPT)\n" \
"target prot opt source destination\n"
# define TEST_NAT_TABLE_LIST \
"Chain PREROUTING (policy ACCEPT)\n" \
"target prot opt source destination\n" \
"\n" \
"Chain INPUT (policy ACCEPT)\n" \
"target prot opt source destination\n" \
"\n" \
"Chain OUTPUT (policy ACCEPT)\n" \
"target prot opt source destination\n" \
"\n" \
"Chain POSTROUTING (policy ACCEPT)\n" \
"target prot opt source destination\n"
static int
testFirewallSingleGroup(const void *opaque G_GNUC_UNUSED)
{
g_auto(virBuffer) cmdbuf = VIR_BUFFER_INITIALIZER;
g_autoptr(virFirewall) fw = virFirewallNew();
int ret = -1;
const char *actual = NULL;
const char *expected =
IPTABLES " -w -A INPUT --source 192.168.122.1 --jump ACCEPT\n"
IPTABLES " -w -A INPUT --source '!192.168.122.1' --jump REJECT\n";
g_autoptr(virCommandDryRunToken) dryRunToken = virCommandDryRunTokenNew();
virCommandSetDryRun(dryRunToken, &cmdbuf, false, false, NULL, NULL);
virFirewallStartTransaction(fw, 0);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "192.168.122.1",
"--jump", "ACCEPT", NULL);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "!192.168.122.1",
"--jump", "REJECT", NULL);
if (virFirewallApply(fw) < 0)
goto cleanup;
actual = virBufferCurrentContent(&cmdbuf);
if (STRNEQ_NULLABLE(expected, actual)) {
fprintf(stderr, "Unexpected command execution\n");
virTestDifference(stderr, expected, actual);
goto cleanup;
}
ret = 0;
cleanup:
return ret;
}
static int
testFirewallRemoveRule(const void *opaque G_GNUC_UNUSED)
{
g_auto(virBuffer) cmdbuf = VIR_BUFFER_INITIALIZER;
g_autoptr(virFirewall) fw = virFirewallNew();
int ret = -1;
const char *actual = NULL;
const char *expected =
IPTABLES " -w -A INPUT --source 192.168.122.1 --jump ACCEPT\n"
IPTABLES " -w -A INPUT --source '!192.168.122.1' --jump REJECT\n";
virFirewallRule *fwrule;
g_autoptr(virCommandDryRunToken) dryRunToken = virCommandDryRunTokenNew();
virCommandSetDryRun(dryRunToken, &cmdbuf, false, false, NULL, NULL);
virFirewallStartTransaction(fw, 0);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "192.168.122.1",
"--jump", "ACCEPT", NULL);
fwrule = virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT", NULL);
virFirewallRuleAddArg(fw, fwrule, "--source");
virFirewallRemoveRule(fw, fwrule);
fwrule = virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT", NULL);
virFirewallRuleAddArg(fw, fwrule, "--source");
virFirewallRuleAddArgFormat(fw, fwrule, "%s", "!192.168.122.1");
virFirewallRuleAddArgList(fw, fwrule, "--jump", "REJECT", NULL);
if (virFirewallApply(fw) < 0)
goto cleanup;
actual = virBufferCurrentContent(&cmdbuf);
if (STRNEQ_NULLABLE(expected, actual)) {
fprintf(stderr, "Unexpected command execution\n");
virTestDifference(stderr, expected, actual);
goto cleanup;
}
ret = 0;
cleanup:
return ret;
}
static int
testFirewallManyGroups(const void *opaque G_GNUC_UNUSED)
{
g_auto(virBuffer) cmdbuf = VIR_BUFFER_INITIALIZER;
g_autoptr(virFirewall) fw = virFirewallNew();
int ret = -1;
const char *actual = NULL;
const char *expected =
IPTABLES " -w -A INPUT --source 192.168.122.1 --jump ACCEPT\n"
IPTABLES " -w -A INPUT --source '!192.168.122.1' --jump REJECT\n"
IPTABLES " -w -A OUTPUT --source 192.168.122.1 --jump ACCEPT\n"
IPTABLES " -w -A OUTPUT --jump DROP\n";
g_autoptr(virCommandDryRunToken) dryRunToken = virCommandDryRunTokenNew();
virCommandSetDryRun(dryRunToken, &cmdbuf, false, false, NULL, NULL);
virFirewallStartTransaction(fw, 0);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "192.168.122.1",
"--jump", "ACCEPT", NULL);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "!192.168.122.1",
"--jump", "REJECT", NULL);
virFirewallStartTransaction(fw, 0);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "OUTPUT",
"--source", "192.168.122.1",
"--jump", "ACCEPT", NULL);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "OUTPUT",
"--jump", "DROP", NULL);
if (virFirewallApply(fw) < 0)
goto cleanup;
actual = virBufferCurrentContent(&cmdbuf);
if (STRNEQ_NULLABLE(expected, actual)) {
fprintf(stderr, "Unexpected command execution\n");
virTestDifference(stderr, expected, actual);
goto cleanup;
}
ret = 0;
cleanup:
return ret;
}
static void
testFirewallRollbackHook(const char *const*args,
const char *const*env G_GNUC_UNUSED,
const char *input G_GNUC_UNUSED,
char **output G_GNUC_UNUSED,
char **error G_GNUC_UNUSED,
int *status,
void *opaque G_GNUC_UNUSED)
{
bool isAdd = false;
while (*args) {
/* Fake failure on the command with this IP addr */
if (STREQ(*args, "-A")) {
isAdd = true;
} else if (isAdd && STREQ(*args, "192.168.122.255")) {
*status = 127;
break;
}
args++;
}
}
static int
testFirewallIgnoreFailGroup(const void *opaque G_GNUC_UNUSED)
{
g_auto(virBuffer) cmdbuf = VIR_BUFFER_INITIALIZER;
g_autoptr(virFirewall) fw = virFirewallNew();
int ret = -1;
const char *actual = NULL;
const char *expected =
IPTABLES " -w -A INPUT --source 192.168.122.1 --jump ACCEPT\n"
IPTABLES " -w -A INPUT --source 192.168.122.255 --jump REJECT\n"
IPTABLES " -w -A OUTPUT --source 192.168.122.1 --jump ACCEPT\n"
IPTABLES " -w -A OUTPUT --jump DROP\n";
g_autoptr(virCommandDryRunToken) dryRunToken = virCommandDryRunTokenNew();
virCommandSetDryRun(dryRunToken, &cmdbuf, false, false, testFirewallRollbackHook, NULL);
virFirewallStartTransaction(fw, VIR_FIREWALL_TRANSACTION_IGNORE_ERRORS);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "192.168.122.1",
"--jump", "ACCEPT", NULL);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "192.168.122.255",
"--jump", "REJECT", NULL);
virFirewallStartTransaction(fw, 0);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "OUTPUT",
"--source", "192.168.122.1",
"--jump", "ACCEPT", NULL);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "OUTPUT",
"--jump", "DROP", NULL);
if (virFirewallApply(fw) < 0)
goto cleanup;
actual = virBufferCurrentContent(&cmdbuf);
if (STRNEQ_NULLABLE(expected, actual)) {
fprintf(stderr, "Unexpected command execution\n");
virTestDifference(stderr, expected, actual);
goto cleanup;
}
ret = 0;
cleanup:
return ret;
}
static int
testFirewallIgnoreFailRule(const void *opaque G_GNUC_UNUSED)
{
g_auto(virBuffer) cmdbuf = VIR_BUFFER_INITIALIZER;
g_autoptr(virFirewall) fw = virFirewallNew();
int ret = -1;
const char *actual = NULL;
const char *expected =
IPTABLES " -w -A INPUT --source 192.168.122.1 --jump ACCEPT\n"
IPTABLES " -w -A INPUT --source 192.168.122.255 --jump REJECT\n"
IPTABLES " -w -A OUTPUT --source 192.168.122.1 --jump ACCEPT\n"
IPTABLES " -w -A OUTPUT --jump DROP\n";
g_autoptr(virCommandDryRunToken) dryRunToken = virCommandDryRunTokenNew();
virCommandSetDryRun(dryRunToken, &cmdbuf, false, false, testFirewallRollbackHook, NULL);
virFirewallStartTransaction(fw, 0);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "192.168.122.1",
"--jump", "ACCEPT", NULL);
virFirewallAddRuleFull(fw, VIR_FIREWALL_LAYER_IPV4,
true, NULL, NULL,
"-A", "INPUT",
"--source", "192.168.122.255",
"--jump", "REJECT", NULL);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "OUTPUT",
"--source", "192.168.122.1",
"--jump", "ACCEPT", NULL);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "OUTPUT",
"--jump", "DROP", NULL);
if (virFirewallApply(fw) < 0)
goto cleanup;
actual = virBufferCurrentContent(&cmdbuf);
if (STRNEQ_NULLABLE(expected, actual)) {
fprintf(stderr, "Unexpected command execution\n");
virTestDifference(stderr, expected, actual);
goto cleanup;
}
ret = 0;
cleanup:
return ret;
}
static int
testFirewallNoRollback(const void *opaque G_GNUC_UNUSED)
{
g_auto(virBuffer) cmdbuf = VIR_BUFFER_INITIALIZER;
g_autoptr(virFirewall) fw = virFirewallNew();
int ret = -1;
const char *actual = NULL;
const char *expected =
IPTABLES " -w -A INPUT --source 192.168.122.1 --jump ACCEPT\n"
IPTABLES " -w -A INPUT --source 192.168.122.255 --jump REJECT\n";
g_autoptr(virCommandDryRunToken) dryRunToken = virCommandDryRunTokenNew();
virCommandSetDryRun(dryRunToken, &cmdbuf, false, false, testFirewallRollbackHook, NULL);
virFirewallStartTransaction(fw, 0);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "192.168.122.1",
"--jump", "ACCEPT", NULL);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "192.168.122.255",
"--jump", "REJECT", NULL);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "!192.168.122.1",
"--jump", "REJECT", NULL);
if (virFirewallApply(fw) == 0) {
fprintf(stderr, "Firewall apply unexpectedly worked\n");
goto cleanup;
}
actual = virBufferCurrentContent(&cmdbuf);
if (STRNEQ_NULLABLE(expected, actual)) {
fprintf(stderr, "Unexpected command execution\n");
virTestDifference(stderr, expected, actual);
goto cleanup;
}
ret = 0;
cleanup:
return ret;
}
static int
testFirewallSingleRollback(const void *opaque G_GNUC_UNUSED)
{
g_auto(virBuffer) cmdbuf = VIR_BUFFER_INITIALIZER;
g_autoptr(virFirewall) fw = virFirewallNew();
int ret = -1;
const char *actual = NULL;
const char *expected =
IPTABLES " -w -A INPUT --source 192.168.122.1 --jump ACCEPT\n"
IPTABLES " -w -A INPUT --source 192.168.122.255 --jump REJECT\n"
IPTABLES " -w -D INPUT --source 192.168.122.1 --jump ACCEPT\n"
IPTABLES " -w -D INPUT --source 192.168.122.255 --jump REJECT\n"
IPTABLES " -w -D INPUT --source '!192.168.122.1' --jump REJECT\n";
g_autoptr(virCommandDryRunToken) dryRunToken = virCommandDryRunTokenNew();
virCommandSetDryRun(dryRunToken, &cmdbuf, false, false, testFirewallRollbackHook, NULL);
virFirewallStartTransaction(fw, 0);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "192.168.122.1",
"--jump", "ACCEPT", NULL);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "192.168.122.255",
"--jump", "REJECT", NULL);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "!192.168.122.1",
"--jump", "REJECT", NULL);
virFirewallStartRollback(fw, 0);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-D", "INPUT",
"--source", "192.168.122.1",
"--jump", "ACCEPT", NULL);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-D", "INPUT",
"--source", "192.168.122.255",
"--jump", "REJECT", NULL);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-D", "INPUT",
"--source", "!192.168.122.1",
"--jump", "REJECT", NULL);
if (virFirewallApply(fw) == 0) {
fprintf(stderr, "Firewall apply unexpectedly worked\n");
goto cleanup;
}
actual = virBufferCurrentContent(&cmdbuf);
if (STRNEQ_NULLABLE(expected, actual)) {
fprintf(stderr, "Unexpected command execution\n");
virTestDifference(stderr, expected, actual);
goto cleanup;
}
ret = 0;
cleanup:
return ret;
}
static int
testFirewallManyRollback(const void *opaque G_GNUC_UNUSED)
{
g_auto(virBuffer) cmdbuf = VIR_BUFFER_INITIALIZER;
g_autoptr(virFirewall) fw = virFirewallNew();
int ret = -1;
const char *actual = NULL;
const char *expected =
IPTABLES " -w -A INPUT --source 192.168.122.1 --jump ACCEPT\n"
IPTABLES " -w -A INPUT --source 192.168.122.255 --jump REJECT\n"
IPTABLES " -w -D INPUT --source 192.168.122.255 --jump REJECT\n"
IPTABLES " -w -D INPUT --source '!192.168.122.1' --jump REJECT\n";
g_autoptr(virCommandDryRunToken) dryRunToken = virCommandDryRunTokenNew();
virCommandSetDryRun(dryRunToken, &cmdbuf, false, false, testFirewallRollbackHook, NULL);
virFirewallStartTransaction(fw, 0);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "192.168.122.1",
"--jump", "ACCEPT", NULL);
virFirewallStartRollback(fw, 0);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-D", "INPUT",
"--source", "192.168.122.1",
"--jump", "ACCEPT", NULL);
virFirewallStartTransaction(fw, 0);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "192.168.122.255",
"--jump", "REJECT", NULL);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "!192.168.122.1",
"--jump", "REJECT", NULL);
virFirewallStartRollback(fw, 0);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-D", "INPUT",
"--source", "192.168.122.255",
"--jump", "REJECT", NULL);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-D", "INPUT",
"--source", "!192.168.122.1",
"--jump", "REJECT", NULL);
if (virFirewallApply(fw) == 0) {
fprintf(stderr, "Firewall apply unexpectedly worked\n");
goto cleanup;
}
actual = virBufferCurrentContent(&cmdbuf);
if (STRNEQ_NULLABLE(expected, actual)) {
fprintf(stderr, "Unexpected command execution\n");
virTestDifference(stderr, expected, actual);
goto cleanup;
}
ret = 0;
cleanup:
return ret;
}
static int
testFirewallChainedRollback(const void *opaque G_GNUC_UNUSED)
{
g_auto(virBuffer) cmdbuf = VIR_BUFFER_INITIALIZER;
g_autoptr(virFirewall) fw = virFirewallNew();
int ret = -1;
const char *actual = NULL;
const char *expected =
IPTABLES " -w -A INPUT --source 192.168.122.1 --jump ACCEPT\n"
IPTABLES " -w -A INPUT --source 192.168.122.127 --jump REJECT\n"
IPTABLES " -w -A INPUT --source '!192.168.122.1' --jump REJECT\n"
IPTABLES " -w -A INPUT --source 192.168.122.255 --jump REJECT\n"
IPTABLES " -w -D INPUT --source 192.168.122.127 --jump REJECT\n"
IPTABLES " -w -D INPUT --source '!192.168.122.1' --jump REJECT\n"
IPTABLES " -w -D INPUT --source 192.168.122.255 --jump REJECT\n"
IPTABLES " -w -D INPUT --source '!192.168.122.1' --jump REJECT\n";
g_autoptr(virCommandDryRunToken) dryRunToken = virCommandDryRunTokenNew();
virCommandSetDryRun(dryRunToken, &cmdbuf, false, false, testFirewallRollbackHook, NULL);
virFirewallStartTransaction(fw, 0);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "192.168.122.1",
"--jump", "ACCEPT", NULL);
virFirewallStartRollback(fw, 0);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-D", "INPUT",
"--source", "192.168.122.1",
"--jump", "ACCEPT", NULL);
virFirewallStartTransaction(fw, 0);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "192.168.122.127",
"--jump", "REJECT", NULL);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "!192.168.122.1",
"--jump", "REJECT", NULL);
virFirewallStartRollback(fw, 0);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-D", "INPUT",
"--source", "192.168.122.127",
"--jump", "REJECT", NULL);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-D", "INPUT",
"--source", "!192.168.122.1",
"--jump", "REJECT", NULL);
virFirewallStartTransaction(fw, 0);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "192.168.122.255",
"--jump", "REJECT", NULL);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "!192.168.122.1",
"--jump", "REJECT", NULL);
virFirewallStartRollback(fw, VIR_FIREWALL_ROLLBACK_INHERIT_PREVIOUS);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-D", "INPUT",
"--source", "192.168.122.255",
"--jump", "REJECT", NULL);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-D", "INPUT",
"--source", "!192.168.122.1",
"--jump", "REJECT", NULL);
if (virFirewallApply(fw) == 0) {
fprintf(stderr, "Firewall apply unexpectedly worked\n");
goto cleanup;
}
actual = virBufferCurrentContent(&cmdbuf);
if (STRNEQ_NULLABLE(expected, actual)) {
fprintf(stderr, "Unexpected command execution\n");
virTestDifference(stderr, expected, actual);
goto cleanup;
}
ret = 0;
cleanup:
return ret;
}
static const char *expectedLines[] = {
"Chain INPUT (policy ACCEPT)",
"target prot opt source destination",
"",
"Chain FORWARD (policy ACCEPT)",
"target prot opt source destination",
"",
"Chain OUTPUT (policy ACCEPT)",
"target prot opt source destination",
"",
"Chain PREROUTING (policy ACCEPT)",
"target prot opt source destination",
"",
"Chain INPUT (policy ACCEPT)",
"target prot opt source destination",
"",
"Chain OUTPUT (policy ACCEPT)",
"target prot opt source destination",
"",
"Chain POSTROUTING (policy ACCEPT)",
"target prot opt source destination",
"",
};
static size_t expectedLineNum;
static bool expectedLineError;
static void
testFirewallQueryHook(const char *const*args,
const char *const*env G_GNUC_UNUSED,
const char *input G_GNUC_UNUSED,
char **output,
char **error G_GNUC_UNUSED,
int *status G_GNUC_UNUSED,
void *opaque G_GNUC_UNUSED)
{
if (STREQ(args[0], IPTABLES) &&
STREQ(args[1], "-w") &&
STREQ(args[2], "-L")) {
*output = g_strdup(TEST_FILTER_TABLE_LIST);
} else if (STREQ(args[0], IPTABLES) &&
STREQ(args[1], "-w") &&
STREQ(args[2], "-t") &&
STREQ(args[3], "nat") &&
STREQ(args[4], "-L")) {
*output = g_strdup(TEST_NAT_TABLE_LIST);
}
}
static int
testFirewallQueryCallback(virFirewall *fw,
virFirewallLayer layer,
const char *const *lines,
void *opaque G_GNUC_UNUSED)
{
size_t i;
virFirewallAddRule(fw, layer,
"-A", "INPUT",
"--source", "!192.168.122.129",
"--jump", "REJECT", NULL);
for (i = 0; lines[i] != NULL; i++) {
if (expectedLineNum >= G_N_ELEMENTS(expectedLines)) {
expectedLineError = true;
break;
}
if (STRNEQ(expectedLines[expectedLineNum], lines[i])) {
fprintf(stderr, "Mismatch '%s' vs '%s' at %zu, %zu\n",
expectedLines[expectedLineNum], lines[i],
expectedLineNum, i);
expectedLineError = true;
break;
}
expectedLineNum++;
}
return 0;
}
static int
testFirewallQuery(const void *opaque G_GNUC_UNUSED)
{
g_auto(virBuffer) cmdbuf = VIR_BUFFER_INITIALIZER;
g_autoptr(virFirewall) fw = virFirewallNew();
int ret = -1;
const char *actual = NULL;
const char *expected =
IPTABLES " -w -A INPUT --source 192.168.122.1 --jump ACCEPT\n"
IPTABLES " -w -A INPUT --source 192.168.122.127 --jump REJECT\n"
IPTABLES " -w -L\n"
IPTABLES " -w -t nat -L\n"
IPTABLES " -w -A INPUT --source 192.168.122.130 --jump REJECT\n"
IPTABLES " -w -A INPUT --source '!192.168.122.129' --jump REJECT\n"
IPTABLES " -w -A INPUT --source '!192.168.122.129' --jump REJECT\n"
IPTABLES " -w -A INPUT --source 192.168.122.128 --jump REJECT\n"
IPTABLES " -w -A INPUT --source '!192.168.122.1' --jump REJECT\n";
g_autoptr(virCommandDryRunToken) dryRunToken = virCommandDryRunTokenNew();
expectedLineNum = 0;
expectedLineError = false;
virCommandSetDryRun(dryRunToken, &cmdbuf, false, false, testFirewallQueryHook, NULL);
virFirewallStartTransaction(fw, 0);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "192.168.122.1",
"--jump", "ACCEPT", NULL);
virFirewallStartTransaction(fw, 0);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "192.168.122.127",
"--jump", "REJECT", NULL);
virFirewallAddRuleFull(fw, VIR_FIREWALL_LAYER_IPV4,
false,
testFirewallQueryCallback,
NULL,
"-L", NULL);
virFirewallAddRuleFull(fw, VIR_FIREWALL_LAYER_IPV4,
false,
testFirewallQueryCallback,
NULL,
"-t", "nat", "-L", NULL);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "192.168.122.130",
"--jump", "REJECT", NULL);
virFirewallStartTransaction(fw, 0);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "192.168.122.128",
"--jump", "REJECT", NULL);
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_IPV4,
"-A", "INPUT",
"--source", "!192.168.122.1",
"--jump", "REJECT", NULL);
if (virFirewallApply(fw) < 0)
goto cleanup;
actual = virBufferCurrentContent(&cmdbuf);
if (expectedLineError) {
fprintf(stderr, "Got some unexpected query data\n");
goto cleanup;
}
if (STRNEQ_NULLABLE(expected, actual)) {
fprintf(stderr, "Unexpected command execution\n");
virTestDifference(stderr, expected, actual);
goto cleanup;
}
ret = 0;
cleanup:
return ret;
}
static int
mymain(void)
{
int ret = 0;
if (virFirewallSetBackend(VIR_FIREWALL_BACKEND_DIRECT) < 0)
return EXIT_FAILURE;
# define RUN_TEST(name, method) \
do { \
if (virTestRun(name, method, NULL) < 0) \
ret = -1; \
} while (0)
RUN_TEST("single group", testFirewallSingleGroup);
RUN_TEST("remove rule", testFirewallRemoveRule);
RUN_TEST("many groups", testFirewallManyGroups);
RUN_TEST("ignore fail group", testFirewallIgnoreFailGroup);
RUN_TEST("ignore fail rule", testFirewallIgnoreFailRule);
RUN_TEST("no rollback", testFirewallNoRollback);
RUN_TEST("single rollback", testFirewallSingleRollback);
RUN_TEST("many rollback", testFirewallManyRollback);
RUN_TEST("chained rollback", testFirewallChainedRollback);
RUN_TEST("query transaction", testFirewallQuery);
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
# if 0
VIR_TEST_MAIN_PRELOAD(mymain, VIR_TEST_MOCK("virgdbus"),
VIR_TEST_MOCK("virfirewall"))
# endif
VIR_TEST_MAIN_PRELOAD(mymain, VIR_TEST_MOCK("virfirewall"))
#else /* ! defined (__linux__) */
int main(void)
{
return EXIT_AM_SKIP;
}
#endif /* ! defined(__linux__) */
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